lxdream 0.9.1| filename | src/cpu.h |
| changeset | 998:1754a8c6a9cf |
| prev | 736:a02d1475ccfd |
| next | 1065:bc1cc0c54917 |
| author | nkeynes |
| date | Wed Jun 24 06:06:40 2009 +0000 (14 years ago) |
| permissions | -rw-r--r-- |
| last change | Support shell substitutions in config paths Keep track of last folder in file dialogs Fix out-of-dateness in GTK path dialog |
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1 /**
2 * $Id$
3 *
4 * Generic CPU definitions, primarily for providing information to the GUI.
5 *
6 * Copyright (c) 2005 Nathan Keynes.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 */
19 #ifndef lxdream_cpu_H
20 #define lxdream_cpu_H 1
22 #include "lxdream.h"
23 #include "mem.h"
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
29 /**
30 * Disassembly function pointer typedef.
31 *
32 * @param pc Address to disassemble
33 * @param buffer String buffer to write disassembly into
34 * @param buflen Maximum length of buffer
35 * @return next address to disassemble
36 */
37 typedef uint32_t (*disasm_func_t)(uint32_t pc, char *buffer, int buflen, char *opcode );
39 #define REG_INT 0
40 #define REG_FLOAT 1
41 #define REG_DOUBLE 2
42 #define REG_NONE 3 /* Used for empty/separator field */
44 /**
45 * Structure that defines a single register in a CPU for display purposes.
46 */
47 typedef struct reg_desc_struct {
48 char *name;
49 int type;
50 void *value;
51 } reg_desc_t;
53 /**
54 * CPU definition structure - basic information and support functions. Most
55 * of this is for debugger use.
56 */
57 typedef struct cpu_desc_struct {
58 char *name; /* CPU Name */
59 /**
60 * Single instruction disassembly
61 **/
62 disasm_func_t disasm_func;
64 /**
65 * Return a pointer to a register (indexed per the reg_desc table)
66 */
67 void * (*get_register)( int reg );
68 gboolean (*is_valid_page_func)(uint32_t); /* Test for valid memory page */
69 /* Access to memory addressed by the CPU - physical and virtual versions.
70 * Virtual access should account for the current CPU mode, privilege level,
71 * etc.
72 * All functions return the number of bytes copied, which may be 0 if the
73 * address is unmapped.
74 */
75 size_t (*read_mem_phys)(unsigned char *buf, uint32_t addr, size_t length);
76 size_t (*write_mem_phys)(uint32_t addr, unsigned char *buf, size_t length);
77 size_t (*read_mem_vma)(unsigned char *buf, uint32_t addr, size_t length);
78 size_t (*write_mem_vma)(uint32_t addr, unsigned char *buf, size_t length);
79 gboolean (*step_func)(); /* Single step function */
80 void (*set_breakpoint)(uint32_t, breakpoint_type_t);
81 gboolean (*clear_breakpoint)(uint32_t, breakpoint_type_t);
82 int (*get_breakpoint)(uint32_t);
83 size_t instr_size; /* Size of instruction */
84 char *regs; /* Pointer to start of registers */
85 size_t regs_size; /* Size of register structure in bytes */
86 const struct reg_desc_struct *regs_info; /* Description of all registers */
87 unsigned int num_gpr_regs; /* Number of general purpose registers */
88 unsigned int num_gdb_regs; /* Total number of registers visible to gdb */
89 uint32_t *pc; /* Pointer to PC register */
90 } const *cpu_desc_t;
92 #ifdef __cplusplus
93 }
94 #endif
96 gboolean gdb_init_server( const char *interface, int port, cpu_desc_t cpu, gboolean mmu );
98 #endif /* !lxdream_cpu_H */
.